We know that before we can apply a scheme to a social object, we have to categorize it. But which of the below statements about categorization is NOT the case?

A. We usually employ categorians with little conscious effort.
B. Research on categorization stems from the pioneering work of cognitive scientist Eleanor Rosch and her colleagues.
C. The categorization of events is a more complex process than that of inanimate objects.
D. The instances in a social category that represent the category as a whole are referred to as exemplars.